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IDENTIFICATION SHEET Dwarf milkweed Asclepias ovalifolia Stem : Stem simple (unbranched) and downy, 30 to 60 cm tall. Flowers : greenish white or pale mauve corolla; orange or yellow corona. Leaves : opposite, oval, with pointy tips, 5 to 8 cm long. Habitat : likes sandy soil, roadsides and dry, sunny conditions. Distribution : British-Columbia, Alberta, Saskatchewan, Manitoba, Ontario © 2016, Mission Monarch IDENTIFICATION SHEET Swamp milkweed Asclepias incarnata Stem : downy (hairy), from 60 to 200 cm tall. Flowers : Umbels red or purplish-pink. Leaves : narrow, tapered, 4 to 17 cm long, arranged in opposite pairs. Fruit : long, narrow and smooth follicles, changing colour from green to brownish. Habitat : wetlands. Also found in swamps, ditches and near streams, rivers and lakes. Populations often scattered – does not form dense colonies. Distribution : Manitoba, Ontario, Qubec © 2016, Mission Monarque. IDENTIFICATION SHEET Green milkweed Asclepias viridiflora Stem : 30 to 90 cm tall, pubescent, green and sometimes purplish. Flowers : arranged in often downward-facing umbels, pale green sometimes tinged with violet. Unlike other milkweed species, the flowers of this species have no corona hoods. Leaves : arranged in opposite pairs on the stem. Vary in shape depending on the habitat where the plant is found. They may be long and narrow or broader and oval. The leaf edges may sometimes be wavy. Habitat : dry, sandy or rocky soils, but also in wetter sites like marshes. Distribution : British Columbia, Alberta, Saskatchewan, Manitoba, Ontario © 2016, Mission Monarque. IDENTIFICATION SHEET Whorled milkweed Asclepias verticillata Stem : angled, pubescent (hairy) or glabrous, 40 to 100 cm tall. Flowers : white corona and greenish corolla. Leaves : elongated and narrow, almost threadlike, 5 to 10 cm long. Arranged in groups of 2 to 4, opposite each other on the stem. Fruit : elongated and lance-shaped, 7 to 10 cm long, glabrous or pubescent (hairy). Habitat : dry, infertile soils. Distribution : Saskatchewan, Manitoba, Ontario © 2016, Mission Monarque. IDENTIFICATION SHEET Common milkweed Asclepias syriaca Stem : downy, usually single, 90 to 120 cm tall. Underground stems. Flowers : pale pink or mauve, arranged in almost spherical umbels. Leaves : broad and thick, 10 to 20 cm long, arranged in opposite pairs on the stem and with pubescent undersides. Fruit : large spindle-shaped fruit, bumpy, rough and downy. Habitat : poor, dry soil, disturbed, sunny sites. Distribution : Saskatchewan, Manitoba, Ontario, Quebec, New-Brunswick, Nova-Scotia, Prince-Edward-Island © 2016, Mission Monarque. IDENTIFICATION SHEET Butterfly milkweed Asclepias tuberosa Stem : 20 to 60 cm tall. Flowers : bright orange-yellow, arranged in umbels. Leaves : alternate on the stem (not opposite each other), lance-shaped, 5 to 10 cm long, smooth on top and downy beneath. Habitat : imestone soils, open, rocky, dry sites. Does not tolerate shade. Unique feature: no milky sap. Distribution : Ontario, Quebec © 2016, Mission Monarque.